Rotary engine.



'j''N`o"-70U,0U7l. 'Patented May I3, 190.2. v

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.ROTARY E NGINE.' (Application led Sept. 4, 1901.)'

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(No Model.)

No. 700,007. vPatenffed- 'May` I3, '1902.

E. W. BARTON.

lRI'JTABY ENINE.'4 (Application med Sept. 4, 1901.)

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.W/TNESSES: INVENTOH 0/ v 125er? www@ l l ./f. By

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|:.v w. BARTON. NoTARY ENGINE.

(N0 MUd`eI.).

(Application led Sept. 4, 1901.)

l Patented May la, |902.

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UNITED "STATES" PATENT OFFICE.

ELBERT WV. BARTON, OF WINDSOR, NEV YORK.

ROTARY rENGlNE. y

sPEcIFIoATIoN forming partei Lectrsraent No. 700,007, navega May 13, 1902. Application filed September 4, 190,1. Serial No. 74,304. (No model.)

T @ZZ whom t may concern: 'Y

Be it known that I, ELBERT W. BARTON, residing at Windsor, in the county'of Broome and State of New York, have invented a new and Improved Rotary Engine, following is a specification.V p I My invention relates to improvements in that class of rotary engines havingconc'entric' pistons; and it comprehends generically a .6 is a perspective view ofthe piston.

casing, a piston having removable heads and formed of a plurality of sections joined to move in unison, and each section having, ra' dially-projecting abutments or fluid-pressureimpacting surfaces; and in its more complete nature my invention embodies a` new and novel correlation of anannular piston-cham-` ber, concentrically-arranged pistons, a steamchest forming a coperative part of the pis# ton-chamber, a variable. cut-oft 'operating Within the steam-chest, governor devices, and cutoff-regulating means combined andar-4 ranged in such manner as to produce an en gine of this character-of a compact but stable form which can be yconveniently and economi ically built 'and effectivelyl serve for its in#v tended purposes. y

In its more subordinate features, my in vention consists in certain novel details of'l construction and peculiar 'combination of parts, all of which will hereinafter'be fullyexplained, and particularly pointed' out in the appended claims,- reference being had to the accompanying drawings, in which- Figurel is a perspective'view of my improved rotary engine,the several parts beingAv shown in an operative position.4 Fig. 2 is an' end elevation of my improved engine viewedKT in the direction of the arrowfin Fig. 3. Figi 3 is a side view of the same looking in thedi-l rection of the arrow in Fig. 2. Fig. 4 is a vere` tical longitudinal section of the same,taken on the line 4 4 of Fig. 3. Fig. 5 isa trans! verse section on the line 5 5.01:' Fig. 4. Fig.'` Fig. 7y is a detail view of 'the steam-chest, the cutl oi operating therein, and the cut-off-con-trol-'f ling Imechanism. Fig. 7n 'is a section on the line`7 7-of Fig. "7; Fig. Svisa detail perspective view ot' one-of thev piston members.

Referring now to the accompanying drawings, in which like characters indicate like parts in all the igures, l designates a suitof which'the" drive-shaft.

able foundation, upon which is mounted the base-plate?, to which the piston-holding casinglis bolted. The piston-casing comprises an annular body portion 3 and the end or cap plates S 3a, which are bolted to the body 3 in any'approved manner. The lower end of' the'casing is restricted, as atSc, to form an exhaust-compartment, Iwhich has a discharge in the nature of a pipe 3d, .that joins with the union-coupling 4a, with which joins a valved otftake-pipe 4 and a second pipe 5, the purpose of which will hereinafter be eX- plained.' A

6 designates a drive-shaft mounted to eX tend centrally through the casing, one end of whichl is journaled in the standard 7, and said'end carries a fast and a loose pulley,

,(indicated by S Sa.) The other end of the shaft is mounted in a standard 7a, and said end has a beveled gear 9, held to mesh with a similar gear 10a; mounted on a drive-shaft 10L'jourx'1aledin suitable bearings 10X 10", formed'on the extensions of standard 7w and whichhas a crank member 10b, the reasonfor which will presently appear.

The piston,which is concentrically arranged within the casing, in the drawings is illustrated as formed by two'sections; but I desire it understood that the same'mayconsistof a single memberor three or more', if desired.r

Each of the disk members in the construction shown consists ofa body portion 11 4'and a series of equally-spaced radial wings or abutmentsV 11?", the outer'edges of which are concentric with and travel close up to the inner* surface of the annular casingbody'. `vIn the present case each disk-section yhas Afour win-gs or abutments, which are formed by cu-tting out vthe sectionsV at quarters and onllines cut at right angles to each other,

whereby to form four pockets, Whose Walls 'y o y'areat right angles to each other, and the wall'yof'each pair or matesvare diametri@- ally opposite and radiate from` the axis of the ln assembling the two piston-sections the radial 'abutments of oneV section are set relatively'to the other, so as to alternate with each other, such arrangement being provided to produce, as it were, eight separate and distinct abutments, so that during one rotation of the piston it will have been under eight loo distinct live ordirect duid-pressure impulses. By such arrangement of parts it is manifest that at all times the piston will be receiving a directimpulse of live steam or other iiuidpressure that may be discharged through the feed-ports.

The piston-sections are joined to form one complete rotary piston by the head-plates 12, (see Figs. 1 and 5,)bolted to the piston members by bolts 12, as shown, and the piston is mounted on the drive-shaft, and to properly center it adjusting-nuts 13 13 are fitted thereon and to seat in recesses 13n in the cylinderhead, as clearly shown in the said ligure.

15 designates a steam-chest, which is disposed tangentially to and is fixedly mounted on the annular casing by the flanges 15 and bolts 151. This chest has two ports :r3 1/3, one for each piston-section, which are controlled by a shifting cut-olf or slide 16 in the nature of an angle-plate, t-he bottom member 1Gn of which is held to slide over to alternately cover and uncover the ports m3 and g/fi, while its vertical member 1Gb is held to abut the front wall ofthe steam-chest 15 and be guided in its movement thereby.

17 designates the feed-pipe, which has a safety globe-valve 17 and a union connection 17b with apipe-section 17C, which empties into a pipe-section 17, equipped with agovernorvalve 18 of any approved construction and which discharges into the chest 15. The governor 18 is geared with the main drive-shaft by a belt connection 4K, as shown.

5X designates a drip-pipe for carrying 0E condensations from the supply chest or tank 15, and the said pipe 5x connects with the pipe 5, which empties into the exhaust-pipe hereinbefore referred to. In practice the pipe 5X has a cut-olf valve 5", as shown.

The cut-O slide for controlling the feed to the piston-chamber is automatically operated by the shifting mechanism best shown in Figs. 1 and 7, by reference to which it will be noticed the crank member 10" on shaft 10 is joined by a link-rod 2O with the lower end of a rocking lever-arm 28, the upper end of which is pivotally connected with a linkrod 2S, whose other end is pivotally counected with the cut-oif slide-rod 29. The lever 28 may be pivotally supported in any well-known manner to be rocked by the rotation of the crank member or disk 10b. I prefer, however, to provide for varying the shifting action of the lever 28, and for such purpose a variable fulcrum member 28x, slidable on the lever 28 and having a stud 28y to engage the slotted end 23x of the shifting bar 23, pivoted at 23n and having a spring-latch connection with a segmental rock 22, is provided. By providing such arrangement it is manifest that by shifting the bar 23 the fulcrum-point of the lever 28 can be changed and the throw of said lever 28 varied as may be desired. In practice the opposite ends of the lever 28 may have guide rolls or projections to travel in curved slots, as shown in Figs. 7 and 7, said slots being of sufficient width to permit of the shiftable arc thrusts of the ends of the lever 28.

The manner in which my engine is set up for practical use and operated is best explained as follows: The casing or cylinder is rst properly mounted and the rotary piston members joined by attaching the cap-plates on the opposite sides and held clamped by the nuts on the drive-shaft that engage the seats in the heads of the casing, which, after the piston is properly fitted on lthe shaft, are bolted tight up in place. The several parts, including the governor, the cut-olf slide, and the slide-adj listing mechanism, are then set in proper position for operation. When steampressure is high enough, the feed-pipe to steam-chest is opened to fill said chest, the odtake-pipe to said chest being opened long enough to draw olf condensation in the chest. The handle-lever 23 is raised one notch, which is su liicient to start the engine slowly, and to increase the speed and power the said lever is adjusted accordingly, and said speed is governed by the governor in the usual manner. To stop the engine, the handle 23 is shifted back to rst notch. If long stop is desired, steam is cut olf by closing the globevalve in the feed-pipe.

From the foregoing, taken in connection with the accompanying drawings, it is thought the complete operation and advantages of my invention will be readily understood.

By reason of the peculiar construction of the several parts, particularly that of the twopart piston, the steam-chest, with its two ports x3 ya, one for each section of the piston, and the means for shifting the slide-valve 16, the port w3 will be opened to cooperate successively with the pockets or steam-receivin g chambers of one of the piston-sections to feed the live steam into said pockets as the rear edges of wings or abutlnents just begin to uncover the said port x3 and at the same time close on the port yg from the pockets of the other piston-section and to likewise cut o the live steam through the port w3, as the wings 11, that cooperate therewith, pass the port x3 and open the port ya to discharge against the radial abutments 11 of the other IOO IIC

piston-section, such arrangement of parts providing, as it were, a substantially continuous direct livesteam pressure against the piston.

Having thus described my invention, what l claim, and desire to secure by Letters Patent, is-

1. The combination with the casing having an annular steam-chamber, having a single,

eXhaust,a rotary piston consisting of two separate sections, each having radial abutments and steam-pockets, those on one section being disposed intermediate those of the other section, and means for clamping the two sections to form a single rotary piston; of a steam-chest forming an attached part of the casing, a governor-regulated feed-pipo thereto, said chest having two independent ports that discharge into the piston-chamber, one for each piston-section, a single cut-off slide for controlling the said feed-ports, gearing connecting the -saidslide with the engine drive-shaft, saidfgearng including means for varying the movement ofthe cut-off slide, for the purposes specified.

2. In a rotary engine, as described,the combination with the annular casing having a single exhaust, and a steam-chest forming an attached part of the casing, and having two separated ports discharging into the pistonchamber, and the rotary concentrically-oper-- ating piston, said piston having two independent sets of abutments and steam-pockets alternately arranged 'relatively to each other; of a cut-oi slide for controlling'the steam-ports to the pistonchamber, said slide consisting of an angle-plate having one member engaging and guided by the side wall of the casing, andl its other member slidable over the steam-ports;'and mechanism connected withand automatically operated by the drive-shaft for shifting said cut-oit to alternately :open and close the steam ports,

said mechanism including means for varying the throw of said cutoff slide, for the-pur poses specified. I

3. In a rotary engine of the character described, the combination with the casing having a single exhaust, an ofEtake-pipe there'4 for, and the rotary piston formed of Asections each having independently-'operating abutments and steam-pockets; of the steam-chest' mounted on the casing, avalved drip-pipe connected with the casing andthe exhaust otake-pipe, said chest having two ports discharging into the piston-chamber, a feedV for the steam-chest having governor devices, operated from the drive-shaft, a' cut-off slide operating within the vsaid -chest for'controlling the steam-ports, and means' energized from the drive-shaft forshifting the cut-off, said means'including hand setdevicesy for regulating'the speed-ot' said cut-offmove ment, as set forth.

ELBERT w. BARTON.'

Witnesses:

W. H. WALLER, GEO. S. HANsoN.v 

